libmystdio.a:my_stdio.o my_string.o
	ar -rc $@ $^
%.o:%.c
	gcc -c $<
.PHONY:clean
clean:
	rm -f *.a *. stdc
.PHONY:output
output:
	mkdir -p stdc/include
	mkdir -p stdc/lib 
	cp -f *.h stdc/include
	cp -f *.a stdc/lib
